CVE-2026-86111Public exploitNetwork attack vector

Restricted-status disclosure via unchecked EditStatus object lookup

Published Sep 5, 2026 · Updated Sep 8, 2026

Authorization bypass in BookWyrm 0 through 0.9.1 allows remote authenticated users to read restricted statuses via the edit endpoint. EditStatus fetches a caller-supplied sequential status ID with get_object_or_404 but omits raise_visible_to_user and privacy_filter, then renders draft.raw_content in a textarea. Any valid account can enumerate IDs and read followers-only or direct reviews, comments, and quotations; the demonstrated path does not permit unauthorized edits.

CVSS severity7.1
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in BookWyrm 0 through 0.9.1 allows remote authenticated users to read restricted statuses via the edit endpoint. EditStatus fetches a caller-supplied sequential status ID with get_object_or_404 but omits raise_visible_to_user and privacy_filter, then renders draft.raw_content in a textarea. Any valid account can enumerate IDs and read followers-only or direct reviews, comments, and quotations; the demonstrated path does not permit unauthorized edits.

The record

CVE
CVE-2026-86111
Published
Sep 5, 2026
Updated
Sep 8, 2026
Vendor
BookWyrm
Product
BookWyrm
Classifications
CWE-639, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=0.9.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

BookWyrm · BookWyrmversion=0 <=0.9.1

Published CVSS scores

7.1VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
6.5VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1213Data from Information Repositories

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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